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iestinstrument
IEST Lab-scale Automatic Coin Cell Assembly Machine(CAAS1000)
Compact Automatic Coin Cell Assembly Machine for Single-Station Gloveboxes
Next-Gen Coin Cell Assembly Machine For Lab-scale
The IEST CAAS1000 Lab-scale Automated Coin Cell Assembly Machine is a compact, single-station glovebox-compatible system built for high-precision, high-consistency assembly of lithium-ion, sodium-ion, and solid-state coin cells in battery R&D laboratories. It integrates automatic electrolyte injection, CCD vision positioning, and automatic sealing to reduce manual assembly errors and improve batch-to-batch consistency. The CAAS1000 assembles up to 10 coin cells per batch at approximately 2 minutes per cell, and supports CR2032, CR2025, and CR2016 formats — making it well suited for universities and research institutes that need reliable, small-batch coin cell assembly for material screening and electrochemical evaluation.
1-10 ea
Customizable Throughput
±0.4 mm
Assembly Concentricity
60 min/ea
Assembly Speed
3-in-1
Inject · Seal · Inspect
Planning to scale up your pilot production or looking for high-throughput, full-process automation?
The Significance of Coin Cell Assembly
In the preliminary stages of lithium battery R&D for novel materials and fabrication processes, coin cells serve as essential platforms for fundamental electrochemical validation. The precision in cell assembly directly impacts the reliability of performance metrics (e.g., capacity retention, cycle stability) and determines the bench-scale feasibility of materials for commercial applications.
System Features
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Compact Design Integrates modules such as automatic electrolyte injection, automatic sealing, and a CCD vision system, etc.
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Comprehensive Functionality Dimensions are engineered to perfectly fit single-workstation standard glovebox specifications.
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High-speed Assembly Approximately 2 mins/cell
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High-Throughput Assembly Up to 10 coin cells per batch, flexibly adapting to different needs.
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Flexible Configuration Supports various common coin cell models such as CR2032, CR2025, CR2016, etc.
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Wide range of cell types Capable of rapidly assembling half-cells, full-cells, and symmetric cells.
Flexible Multi-Format Coin Cell Assembly
The CAAS1000 accommodates the three most common coin cell diameters used in lithium and sodium-ion battery R&D through interchangeable sealing molds, material trays, and fixtures. This allows a single lab-scale system to support multiple project workflows without purchasing separate equipment for each cell format. Switching between different heights within the CR20 series requires no complex reconfiguration, providing maximum adaptability for university and research laboratories.
Rapid Assembly
Approx 2 mins/ cell
High-Precision Assembly
Concentricity ±0.4mm
Multi Material Suction Cups
Prevent contamination
Process Traceability
(Optional) Material surface detection
High-throughput Assembly
Up to 10 cells/ batch
Automatic Sealing Module
Precise auto sealing
Automatic Liquid Injection
Max 24 electrolytes
Data Processing Software
Process recording
Equipment Expansion
High-Throughput Automatic Electrolyte Switching System
- Equipment Features: Can interface with an automatic electrolyte formulation platform. Enables automatic switching between 100 different electrolyte recipes, supports continuous assembly of 400 battery cells.
- Application Scenario: Suitable for coin cell assembly for electrolyte formulation verification and high-throughput battery assembly.
Liquid Injection Module
- High-precision liquid injection with accuracy of ±1 μL. Injection volume continuously adjustable from 0 to 200 μL.
- Injection tips automatically switched to prevent cross-contamination of electrolytes.
- Automatic electrolyte transfer & short-term storage. Single transfer: 25 bottles (60 mL/bottle). Max capacity: 200 bottles.
1. Case 1: Manual Assembly VS Auto Assembly
| Assembly Comparison | Manual Assembly | Automatic Assembly | |||||
|---|---|---|---|---|---|---|---|
| Item | Charge capacity (mAh/g) |
Discharge capacity (mAh/g) |
Efficiency (%) |
Charge capacity (mAh/g) |
Discharge capacity (mAh/g) |
Efficiency (%) |
|
| NCM-1 | Range value | 1.1 | 1.3 | 0.22% | 0.7 | 0.7 | 0.26% |
| Average | 225.525 | 211.142 | 93.62% | 225.325 | 211.05 | 93.66% | |
| σ | 0.384 | 0.396 | 0.001 | 0.226 | 0.198 | 0.001 | |
| COV | 0.17% | 0.19% | 0.07% | 0.10% | 0.09% | 0.08% | |
| NCM-2 | Range value | 1.8 | 2 | 0.23% | 0.6 | 0.9 | 0.23% |
| Average | 225.467 | 211.7833 | 93.93% | 225.292 | 211.6083 | 93.93% | |
| σ | 0.44 | 0.465 | 0.001 | 0.178 | 0.231 | 0.001 | |
| COV | 0.20% | 0.22% | 0.07% | 0.08% | 0.11% | 0.07% | |
| Assembly Comparison | Manual Assembly | Automatic Assembly | |||||
|---|---|---|---|---|---|---|---|
| Item | Charge capacity (mAh/g) |
Discharge capacity (mAh/g) |
Efficiency (%) |
Charge capacity (mAh/g) |
Discharge capacity (mAh/g) |
Efficiency (%) |
|
| Silicon base-1 |
Range value | 20.6 | 12.6 | 0.55% | 17 | 16.8 | 0.25% |
| Average | 1908.4 | 2046.9083 | 93.24% | 1907.592 | 2044.9083 | 93.28% | |
| σ | 6.948 | 4.391 | 0.002 | 4.553 | 4.678 | 0.001 | |
| COV | 0.36% | 0.21% | 0.18% | 0.24% | 0.23% | 0.07% | |
| Silicon base-2 |
Range value | 39.7 | 22.4 | 1.46% | 19.9 | 22.2 | 0.38% |
| Average | 1897.85 | 2039.7833 | 93.02% | 1903.992 | 2041.5667 | 93.26% | |
| σ | 11.669 | 6.954 | 0.005 | 5.211 | 6.322 | 0.001 | |
| COV | 0.61% | 0.34% | 0.49% | 0.27% | 0.31% | 0.11% | |
For NCM materials:
- The range of charge/discharge specific capacity for NCM with automatic assembly is 0.6~0.9 mAh/g (σ ≈ 0.25), while with manual assembly it is 1~2 mAh/g (σ ≈ 0.4).
For Silicon-based anode materials:
- The range of charge/discharge specific capacity for Si-based materials with automatic assembly is 15~20 mAh/g (σ ≈ 4~6), while with manual assembly it is 20~40 mAh/g (σ ≈ 5~10).
Conclusion: While the average specific capacity values obtained from automated and manual assembly methods were comparable for both material types, automated assembly demonstrated superior stability compared to manual assembly.
2. Case 2: Automatic Coin Cell Assembly of LFP Cathodes
| Category | Item | Group 1 | Group 2 | Group 3 | Group 4 | Group 5 | Group 6 | Group 7 |
|---|---|---|---|---|---|---|---|---|
| Range | Charge capacity (mAh/g) | 1.5 | 1.1 | 1.2 | 1.1 | 1 | 0.6 | 0.4 |
| Discharge capacity (mAh/g) | 1.3 | 1.2 | 1 | 1.3 | 0.9 | 0.6 | 0.5 | |
| Coulombic Effi (%) | 0.8 | 0.4 | 0.3 | 1.3 | 0.4 | 0.5 | 0.6 | |
| Average | Charge capacity (mAh/g) | 161 | 160.7 | 160.7 | 161.3 | 161.1 | 161.1 | 161.1 |
| Discharge capacity (mAh/g) | 156.9 | 156.7 | 156.6 | 157 | 156.9 | 156.9 | 156.9 | |
| Coulombic Effi (%) | 97.4 | 97.5 | 97.5 | 97.4 | 97.4 | 97.4 | 97.4 | |
| σ | Charge capacity (mAh/g) | 0.37 | 0.32 | 0.33 | 0.38 | 0.24 | 0.2 | 0.12 |
| Discharge capacity (mAh/g) | 0.31 | 0.36 | 0.29 | 0.3 | 0.25 | 0.16 | 0.12 | |
| Coulombic Effi (%) | 0.18 | 0.12 | 0.09 | 0.3 | 0.11 | 0.12 | 0.12 | |
| COV | Charge capacity (mAh/g) | 0.23% | 0.20% | 0.21% | 0.24% | 0.15% | 0.12% | 0.10% |
| Discharge capacity (mAh/g) | 0.20% | 0.23% | 0.18% | 0.19% | 0.16% | 0.10% | 0.10% | |
| Coulombic Effi (%) | 0.18% | 0.12% | 0.09% | 0.31% | 0.11% | 0.12% | 0.12% |
Conclusion:
- The standard deviation (σ) for the charge/discharge specific capacity of each group is less than 0.4.
- The range for the charge/discharge specific capacity of each group is less than 1.5 mAh/g.
- The coefficient of variation (COV) for the charge/discharge specific capacity of each group is less than 0.3%.
3. Case 3: Automatic Coin Cell Assembly of Graphite Anodes
| Category | Item | Group 1 | Group 2 | Group 3 | Group 4 | Group 5 | Group 6 | Group 7 |
|---|---|---|---|---|---|---|---|---|
| Range | Charge capacity (mAh/g) | 1.1 | 1.2 | 1.1 | 1.2 | 1.3 | 1.2 | 1.5 |
| Discharge capacity (mAh/g) | 1.8 | 1.8 | 1.8 | 1.9 | 2.1 | 2.1 | 2.1 | |
| Coulombic Effi (%) | 0.4 | 0.5 | 0.5 | 0.4 | 0.5 | 0.7 | 0.6 | |
| Average | Charge capacity (mAh/g) | 347.9 | 347.8 | 347.7 | 347.3 | 345.4 | 346.2 | 346.1 |
| Discharge capacity (mAh/g) | 367.8 | 368.4 | 368.2 | 368.2 | 367.7 | 368.2 | 368.8 | |
| Coulombic Effi (%) | 94.6 | 94.4 | 94.4 | 94.3 | 93.9 | 94 | 93.8 | |
| σ | Charge capacity (mAh/g) | 0.28 | 0.38 | 0.31 | 0.34 | 0.45 | 0.35 | 0.44 |
| Discharge capacity (mAh/g) | 0.57 | 0.62 | 0.6 | 0.53 | 0.51 | 0.65 | 0.69 | |
| Coulombic Effi (%) | 0.13 | 0.15 | 0.14 | 0.13 | 0.13 | 0.17 | 0.15 | |
| COV | Charge capacity (mAh/g) | 0.08% | 0.11% | 0.09% | 0.10% | 0.13% | 0.10% | 0.13% |
| Discharge capacity (mAh/g) | 0.16% | 0.17% | 0.16% | 0.14% | 0.14% | 0.18% | 0.19% | |
| Coulombic Effi (%) | 0.14% | 0.16% | 0.15% | 0.13% | 0.14% | 0.18% | 0.16% |
Conclusion:
- The standard deviation (σ) for the discharge specific capacity in each group is less than 0.8, and for the chargespecific capacity, it is less than 0.5.
- The range for the discharge specific capacity in each group is less than 2.1 mAh/g, and for the charge specificcapacity, it is less than 1.5mAh/g.
- The coefficient of variation (COV) for both charge and discharge specific capacity in each group is less than 0.2%.
4. Case 4: Curling Issue of Single-Sided Electrodes after Calendering and Punching
Conclusion:
- Our specially designed suction cup can ensure that the curled electrodes are sucked evenly and flatly.
- Our visual positioning system can avoid the placement position deviation caused by the curling of the electrodes.
- The positive electrode shell is pressed down horizontally to flatten the curled electrode that contacts the electrolyte.
FAQs
The CAAS1000 is a compact, single-station glovebox-compatible coin cell assembly machine designed for small-batch R&D, assembling 1–10 cells per batch at ±0.4mm concentricity. The industrial-scale CAAS system (CAAS1100/1200) uses an integrated multi-station glovebox and supports up to 200 cells per batch at ±0.2mm concentricity for high-throughput production and pilot-scale screening.
The CAAS1000 is engineered to fit standard single-station, single-sided glovebox specifications, so it can typically be integrated into gloveboxes your lab already operates rather than requiring a dedicated enclosure. Exact compatibility depends on your glovebox's interior dimensions and port configuration — confirm with our application engineering team before installation.
The CAAS1000 assembles CR2032, CR2025, and CR2016 format coin cells, and supports half-cells, full cells, and symmetric cells for lithium-ion and sodium-ion battery R&D.
The CAAS1000 assembles 1 to 10 coin cells per batch, with each cell taking approximately 2 minutes to complete, covering electrolyte injection, CCD vision positioning, and sealing.
The CAAS1000 (Compact Version) is specifically designed for universities and research institutes requiring small-batch coin cell assembly rather than industrial-scale production, making it a lower-footprint entry point into automated assembly compared to high-throughput systems.
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